Musical instrument of the accordion type.



PATENTED APR. 14,` 1908 A. LBNGBLMANN.

MUSICAL INSTRUMENT @F.THE AGOORDTON TYPE. APPLICATION E'ILBD JUNE 18. 1907.

- musical instruments PATENT ormoni.

AUGUST-.IL ENGELIVAN'N, (.)lf ST. LOUIS, MISSOURI.' 'l

MUSICAL INSTRUMENT O'F THE ACCORKDION TYPE.'

Specification-of Letters Patent. i Patented April 14, 1908. i

Application filed June 18, 19,07. Serial No. 379,652.

To all A127mm it may concern.'

Be it known that I, A'uGUs'rJ. ENGELMANN, a citizen of the United States, and resident of St. Lo uis, Missouri, have invented certain new and useful Improvements in Musical Instruments of the Accordion Type, of which the following is a specification.

This invention relates to improvements in of the accordion type, and consists in the novel arrangement, construction, and combination of parts as will be fully hereinafter described and claimed.

The object of my invention is the construction and formation of the spring whereby the valves of the instrument are controlled and held in closed position when not in use.

The essential feature of ymy invention is the spring.

In the drawings; Figure 1 is a top plan view of the valve end of an accordion with parts broken away showing the arrangement of valves in relation to the spring.l Fig. 2 is a central cross-sectional view of the same taken on the line 2*2 of'F-ig. 1. Fig. 3 is a detail perspective View of my improved spring. i

In the construction of my invention I provide a sheet ofspring material 4 suitably cut and stamped forming a plurality of prongs or teeth 5, the ends of said prongs suitably bent forming a recess 6 in which are adapted to rest the ends 7 of the valve stem 8.

The base of the 'spring or that part from which the prongs are formed is provided with j openings 9 for the insertion of screws by which the springV is securely fastened to the casing 1() of the accordion trame, and the base portion is suitablystrengthened by an integral y upturned flange or strengthening rib 10.

I will now describe the construction of the valve mechanism which is in combination with and controlled by my improved spring.

1ly indicates a hollow key frame into which project a plurality provided with keys project throufrh openings 14 in thev side of the frame. While playing the instrument the fingers are brought in contact with the buttons 13 and when pressed inwardly in the -position as shown'by dotted lines in Fig. 2,

they will raise the valves 15 u wardly permitting' the air to pass outward yand create the tone by coming infcontact with the reed of key bars `12, its ends or finger knobs 13 which of thc instrument. The key bars' 12 are pivotally secured in the bottom of the frame upon'arod 16.

The valve 15 is secured upon the valve stem S, l and thel said valve stem projects through the lower end of the-.key bars, and its end referred to by the numeral 7 is eX- tended through the frame suIiciently to contact with the ends of the rongs 5.

The spring is covered y a casing .17 and held in position upon the frame by lthe screws 18 (see Figs. l and 2). The valves are also incased ina casing 19 which' is supported to the frame by the screws 20. The essential feature of my invention is the construction of the spring formed out of a single sheet so that the prongs may be at all times in proper relation with the valve stein, and the same can be readily and easily placed in position Vupon the casing, and its ends contacting with the projecting end of each valve stem. If desired I may construct veach prong separately and arrangel them in alinement upon the casing in the saine position as the integral formation of the spring.y

Heretofore the springs used in connection with the valves of an accordion have been of the coil s ence in t e musical businesslI have never found a leaf s ring used in this connection.

.Having fulfy described my invention, what Iclaim is: i

l. A. musical instrument coinprisin a ring nature, and from my eXperispring formed of a single sheet in combinai tion with valve stems and valves, said spring having a plurality of integral prongs so bent and shaped as to contact with the projecting ends of the valve stems to retain the valves in closed position, and a strengthening rib on the spring, substantially as speciied.

2. A ymusical instrument comprising an accordion provided withk a casing, a spring in combination with valve stems and valves, said spring being formed of'a single sheet,

saidspring having la plurality of projectingr integral prongs contacting with the valve stems, means for retaining said spring in position' upon the casing of thel accordion, a

strengthening rib on the spring, and a cover.

inclosing the spring, substantiallyas specified.

3. A musical instrument comprising an accordion .provided with a casing, a spring having a plurality of integral projecting name to this specoaton, in presence of two Jprongs, and a base ortion, a stengtening subscribing Wltnesses. rib on the s rin ya ves mounte n t e easv f T ing of the aleorgdion and valve stems where- AUGUST J' ENGELMAAN' 5 by said valves are actuated., substgmtilly as Witnesses:

Specified'. ALFRED A.' EI'CK'S, In testimony whereof, I 'have signed my 1 WALTER C. STEIN. 

